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Quantum-Seeded Distributed Post-Quantum Group Signatures for 5G V2X Communications

P. Blanco-Casal, P. Rejo-Iglesias, D. Cajaraville-Aboy, J. Vecino-Peñas, R. P. Díaz-Redondo, A. Fernández-Vilas, M. Fernández Veiga · 2026 · arXiv (Cornell University)

DOI: 10.48550/arxiv.2610.27316 · cited by 0 works (OpenAlex) · open-access PDF

Indonesian

Komunikasi kendaraan-ke-semuanya (V2X) bergantung pada tanda tangan-tanda tangan elips-kurva yang dipecahkan oleh lawan kuantum dan pada sertifikat-sertifikat pseudonym yang anonimitasnya bergantung pada tingkat rotasi, bukan kriptografi. Karya ini menyajikan qDGSP, infrastruktur V2X pasca-kuantum: skema tanda tangan kelompok dinamis berbasis hash (DGSP, over SPHINCS+ dan WOTS+) yang didistribusikan antara pengendali pusat dan verifikator jalan. Kunci kelompok berasal secara deterministik dari distribusi kunci kuantum (QKD) benih yang disampaikan melalui antarmuka ETSI GS QKD 014, sehingga tidak ada rahasia tanda tangan kelompok yang menyeberangi saluran klasik. qGSPEA- (Ephemeral Association) mengikat kunci MLD-SA-65

Machine translation (Meta M2M100); the English original follows.

Abstract

Vehicle-to-Everything (V2X) communications rely on elliptic-curve signatures that a quantum adversary breaks and on pseudonym certificates whose anonymity rests on rotation rate, not cryptography. This work presents qDGSP, a post-quantum V2X infrastructure: a hash-based dynamic group signature scheme (DGSP, over SPHINCS+ and WOTS+) distributed between a central controller and roadside verifiers. Group keys derive deterministically from quantum key distribution (QKD) seeds served over the ETSI GS QKD 014 interface, so no group-signature secret crosses the classical channel. qDGSP-EA (Ephemeral Association) binds an ephemeral ML-DSA-65 key to one group signature per 5G cell: messages remain unlinkable across cells, linkable within one. On a testbed with emulated 5G links, median end-to-end latency stayed within the 100ms ETSI budget for every variant. The qDGSP-EA intra-cell DENM matched the NIST ML-DSA-65 baseline on the wire, and under load EA mode raised delivery from roughly 78% to 93%.

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Topics: Computer science, Testbed, Anonymity, Computer network, Group signature, Digital signature

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